MATH CALCULATOR
Scalene Triangle Calculator
Effortlessly calculate the area, perimeter, and angles of a scalene triangle.
What is the Scalene Triangle Calculator & How does it work?
A scalene triangle is a triangle with all sides of different lengths. The area can be calculated using Heron’s formula: . The perimeter is simply the sum of all sides: . Angles can be found using the Law of Cosines.
A = sqrt{s(s-a)(s-b)(s-c)}
s = semi-perimeter, a, b, c = side lengths
P = a + b + c
P = perimeter, a, b, c = side lengths
Parameters
Result—
Frequently Asked Questions
How do I calculate the area of a scalene triangle?
Use Heron’s formula: A = √[s(s-a)(s-b)(s-c)], where s is the semi-perimeter (a+b+c)/2, and a, b, c are the side lengths.
What is the perimeter of a scalene triangle?
The perimeter is simply the sum of all three sides: P = a + b + c.
How do I find the angles of a scalene triangle?
Use the Law of Cosines to calculate each angle. For example, cos(A) = (b² + c² – a²) / (2bc).
Can this calculator handle any type of triangle?
This calculator is specifically for scalene triangles, where all sides are of different lengths.
What if I only know two sides and an angle?
You can still find the third side using the Law of Cosines or Sine Rule, then calculate the area and perimeter.
Is this calculator suitable for right-angled triangles?
No, this calculator is designed for scalene triangles. For right-angled triangles, use a different calculator.
Can I input side lengths in any unit of measurement?
Yes, as long as all side lengths are in the same unit of measurement, you can calculate the area and perimeter.
Results are for informational purposes only and do not constitute professional advice.